Personal Collections of Famous Billionaires

Jeff Bezos

The richest man in the world, Jeff Bezos, spent three weeks on a submarine in 2013 collecting the booster rockets used in the Apollo 11 mission from the ocean floor.

"I was five years old when I watched Apollo 11 unfold on television, and without any doubt it was a big contributor to my passions for science, engineering, and exploration," Bezos — who has a net worth of $165.6 billion — wrote on the Bezos Expeditions blog in 2013. "A year or so ago, I started to wonder, with the right team of undersea pros, could we find and potentially recover the F-1 engines that started mankind's mission to the moon?"

One of the rockets has been on display at The Museum of Flight in Seattle since 2015, according to the Museum's website.

Bezos has recovered dozens of NASA artifacts from the ocean floor, including thrust chambers, gas generators, injectors, heat exchangers, and turbines, according to Space.com.